How do I convert kWh to J?

Use the formula shown above or enter a value to see kWh converted to J instantly.

What is the formula for kWh to J?

The converter calculates J by applying the category-specific conversion factor for Energy.

When should I use kWh vs J?

kWh and J are both part of the Energy category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Energy Conversion Guide

Convert kWh to J

Use the live converter below to translate between Kilowatt Hour (kWh) and Joule (J). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

kWh → J

Kilowatt Hour

kWh

Joule

3,600,000

Rounded result (4 decimals max)

Formula

1 kWh = 3,600,000 J

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from J to kWh.

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kWh to J quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Kilowatt Hour (kWh)	Joule (J)
0.25 kWh	900,000 J
0.5 kWh	1,800,000 J
1 kWh	3,600,000 J
2 kWh	7,200,000 J
5 kWh	18,000,000 J
10 kWh	36,000,000 J
25 kWh	90,000,000 J
100 kWh	360,000,000 J

J back to kWh

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Joule (J)	Kilowatt Hour (kWh)
0.25 J	6.94444×10^-8 kWh
0.5 J	0 kWh
1 J	0 kWh
2 J	0 kWh
5 J	0 kWh
10 J	0 kWh
25 J	0 kWh
100 J	0 kWh

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